If your dog ate chocolate, contact your emergency vet immediately. Use our calculator to learn how it will affect your dog.This is because the darker chocolate is more toxic, so a smaller amount would still result in toxicity. Why Isn't Chocolate Toxic to Humans?
Why Is Chocolate Toxic to Dogs?Types of Chocolate and Toxicity LevelsIf you believe your dog ate chocolate, call your veterinarian immediately or call the Pet Poison...
different types of chocolate toxic to pets. Which Chocolate Is Most Toxic to Dogs?Is Chocolate Toxic to Cats? Chocolate toxicity discussions typically seem to be dog-centric because they account for roughly 95% of chocolate consumption cases.

Pets who ingest toxic amounts of chocolate are at risk for death because of cardiac arrest or central nervous system problems. Additionally, pets who ingest chocolate have an increased risk of developing pancreatitis, a dangerous inflammatory condition that can be life-threatening.
In general, the darker or more bitter the chocolate, the greater the risk and the smaller the amount required to cause toxicity. Pet owners should pay special attention to the use and storage of any product containing chocolate, especially the following, listed from most to least toxic

Yes, chocolate is toxic to dogs.Contact your veterinarian or Pet Poison Helpline at 1-800-213-6680 to see if a poisonous amount of chocolate has been ingested. If a toxic amount was ingested, immediate evaluation by a veterinarian will be recommended.
Most pet owners know that chocolate is toxic to dogs, but the same is true for cats. Chocolate contains the ingredients caffeine and theobromine, both of which are harmful to cats. In large amounts, it can cause death.

Dark chocolate and semi-sweet chocolate chips are halfway between baking chocolate and milk chocolate in toxicity. If your pet eats one chocolate-chip cookie, I would watch for vomiting and diarrhea, but I wouldnt think chocolate toxicity.